Burial Bog Map Boss Fight Bug

If you attempt to do a boss fight on the map Burial Bog, after defeating the boss, you get stuck in the arena and are unable to leave. This has happened 3 times on T-15 maps over various spots on the map device, but have all been on Burial Bog. This has cost me to be unable to finish the map and lose them.

If you see a Burial Bog map that has a boss fight, try and complete everything else before attempting the big boss fight due to potentially getting stuck and losing the map like I have now multiple times.

This just happened to me too. A blood wall blocks the exit of the arena.

https://imgur.com/a/P5U2WGq